Classification of Malignant Epithelial Lung Tumors

1. Small cell carcinoma /Oat cell carcinoma

2. Non small cell carcinoma

a. Squamous cell carcinoma

b. Adenocarcinoma

• Acinar
• Solid
• Mixed
• Papillary
• Bronchoalveolar

c. Large cell carcinoma

d. Adenosquamous carcinoma

3. Carcinoid Tumor

Typical

Atypical

4. Carcinomas of Salivary Gland type

5.Carcinomas with pleomorphic, sarcomatoid or sarcomatous elements

6. Pulmonary blastomas

7. Unclassified carcinoma

8. Metastatic tumors

Image: small cell carcinoma, courtesy of Nephron